Napoleon Ferland served as the first keeper of Sainte-Pétronille Lighthouse, earning an annual salary of $150.
In 1903, the colour of the light was changed from green to white, and in 1906, a fourth-order lens with an occulting screen operated by clockwork was installed in the lantern room. This lighting apparatus was manufactured by Chance Bros. & Co. of Birmingham, England, and it produced a light that was alternately visible for five seconds and then eclipsed for three.
Fire destroyed the original Sainte-Pétronille Lighthouse in 1934, and a replacement light was established on the nearby government wharf in the form of a pole light mounted atop a freight shed. This light had a focal plane of thirty-three feet and exhibited two flashes every seven seconds in this manner: two-second flash, half-second eclipse, two-second flash, two-and-a-half-second flash. In 1954, a forty-five-foot-tall, white, wooden pole topped by a red lantern was mounted on the outer end of the wharf to exhibit the light at a height of forty-nine feet.
When the wharf was demolished in 1983, the light was moved to a skeletal tower adjacent to the nearby hotel. This hotel, known originally as Château Bel-Air, then Manoir de l’Anse, and finally Auberge La Goéliche, burned in 1996, but reopened in 1997 after being rebuilt.
Keepers: Napoleon Ferland (1901 – 1931), H. Lizotte (1931 – 1933).